KR20000064780A - Magnetic tape recording and / or reproducing apparatus - Google Patents

Abstract

A recording and / or reproducing apparatus using magnetic tape on a recording medium. This device is equipped with reel gear on the supply side, reel gear on winding side, tape guide drum on which magnetic tape drawn from tape cassette is wound, tape taping and magnetic tape which draws magnetic tape from tape cassette and wraps around tape guide drum. And a tape loading mechanism for carrying out the unloading to store the inside of the tape cassette, and a switching mechanism for switching the traveling direction of the magnetic tape drawn out from the tape cassette. The switching mechanism has an intermediate gear positioned between the supply side reel gear and the winding side reel gear during loading of the magnetic tape by the tape loading mechanism.The intermediate gear is supplied with the supply side reel gear and the winding side reel gear after the loading of the magnetic tape is completed. By selectively fitting it to the control direction of the magnetic tape. Since the traveling direction of the magnetic tape is controlled by the switching of the intermediate gear, the traveling direction of the magnetic tape is quickly changed.

Description

Magnetic tape recording and / or reproducing apparatus

Conventionally, a recording and / or reproducing apparatus using a tape cassette containing magnetic tape as a recording medium is used. Audio PCM tape precoder or video tape with recording and / or reproducing apparatus having a rotating magnetic head unit attached to a rotating magnetic head which slides in contact with the magnetic tape on a tape guide drive which winds the magnetic tape drawn out of the tape cassette. Recorders and the like are known.

The recording and / or reproducing apparatus records and / or reproduces the information signal on the magnetic tape by encouraging relative sliding contact between the magnetic tape and the rotating magnetic head which are rolled around the tape guide drum.

As a recording and / or reproducing apparatus having a rotating magnetic head device, a magnetic tape stored in a tape cassette is taken out of the tape cassette, extended to a predetermined tape runway in the apparatus body, and further loaded on a tape guide drum. A tape loading mechanism for carrying out is provided. The tape loading mechanism has a moving guide block that moves between the tape cassette mounting position and the rotating magnetic head device. The moving guide block is equipped with a guide roller, and the magnetic tape is hung on the guide roller, taken out of the tape cassette, and wound around the tape guide drum to be automatically loaded on the tape runway. The magnetic tape wound around the tape guide drum is pinched by the capstan shaft and the pinch roller which are driven by the capstan motor.

However, as a recording and / or reproducing apparatus such as an audio PCM tape precoder with a rotating magnetic head device, the magnetic tape may be used to retrieve a recording signal recorded on magnetic tape or to rewrite subcodes. When traveling in the forward direction in order to perform recording and / or reproduction of signals, it is sometimes necessary to run in the reverse direction of the reverse direction.

In order to perform such an operation, this kind of tape recorder is provided with a mechanism for selectively driving the reel shaft on the supply side or the winding side of the magnetic tape in accordance with the traveling direction of the magnetic tape. The mechanism for switching the reel shaft to be driven according to the traveling direction of the magnetic tape is to transmit the driving force of the drive motor for rotating the reel shaft to one of the reel shafts, and is provided independent of the capstan motor for driving the magnetic tape at constant speed. .

Recording and / or regeneration with the capstan motor for driving the magnetic tape at constant speed and the driving motor for driving the reel shaft independently, and the capstan motor and the reel shaft driving motor can be controlled independently. Since the tape can be wound, the traveling direction of the magnetic tape can be changed quickly.

Such a recording and / or reproducing apparatus has the following inconveniences when unloading the magnetic cassette drawn out of the tape runway into the tape cassette when the tape cassette is taken out of the cassette device section in the apparatus main body.

When the magnetic tape is loaded onto a predetermined tape runway, it is necessary to remove the magnetic tape from the tape cassette so that the driving force transmission gear that transmits the driving force of the driving motor for driving the reel shaft to the reel shaft of the supply side needs to be engaged. In addition, when unloading the magnetic tape, it is necessary to engage the teeth of the drive force transmission gear with the reel shaft of the supply side.

As the drive force transmission gear is engaged with the reel shaft when the tape cassette is ejected from the cassette mounting portion in the apparatus body as described above, the tape cassette is mounted on the cassette mounting portion, and the magnetic tape is placed on the reel shaft on the supply side when the magnetic tape is loaded on a predetermined tape runway. It is necessary to separate the twisted driving force transmission gear from the reel shaft. In such a recording and / or reproducing apparatus, a mechanism is required for the driving force transmission gear to be separated from the reel shaft when the magnetic tape is loaded while the magnetic tape is unloaded, and the tape loading mechanism becomes complicated.

In addition, the tape cassette has a larger winding diameter when the amount of winding of the magnetic tape is wound around the tape reel, so that the winding speed of the magnetic tape is faster, and when the winding amount of the magnetic tape wrapped around the tape reel is smaller, the winding diameter is smaller. As a result, the winding speed of the magnetic tape is delayed. Therefore, the speed at which the magnetic tape is wound on the tape reel by the state of the magnetic tape being wound on the tape reel is the loading position of the rotating magnetic head device side of the moving guide block constituting the tape loading mechanism of the magnetic recording and / or reproducing apparatus. There is a possibility that the magnetic tape may be damaged by giving more tension than necessary to the speed of moving the tape cassette to the tape cassette mounting position.

In addition, a tape cassette transfer member or a cassette holder, which uses a tape cassette for a recording medium, and which is supported by a rotating magnetic head device to be movable across a removable cassette position and a tape cassette device position, is provided. have. The tape cassette is mounted on the cassette mounting portion of the apparatus main body by moving from the detachable position of the tape cassette to the tape cassette mounting position via the tape cassette transfer member or the cassette holder.

The magnetic tape drawn out from the tape cassette is brought into sliding contact with the revolving magnetic rotor head over the tape guide drum over a predetermined angle range. For this reason, the tape running path of the magnetic tape is a complicated one having an approximately M shape or a U shape around the rotating magnetic head device. The recording and / or reproducing apparatus is provided with a tape loading mechanism as described above for loading magnetic tape on such a complicated tape running path.

However, in the recording and / or reproducing apparatus which is downsized to a portable size, since the entire apparatus is downsized, the intervals between the members of the tape loading mechanism are extremely narrow, and the members are arranged close to each other. Therefore, the moving guide block constituting the tape loading mechanism is located very close to the rotating magnetic head device when moved near the rotating magnetic head device. In addition, the movable guide block is mechanically supported by a support arm that supports it, and the support arm rotates to move between the tape cassette mounting position and the rotating magnetic head device. In this way, the movement guide block is mechanically supported, and when the moving guide block is moved to the vicinity of the rotating magnetic head apparatus by having a certain margin, it may come into contact with the inclined rotating magnetic head apparatus on the side of the rotating magnetic head apparatus.

The magnetic tape recording and / or reproducing apparatus having the above-described rotating magnetic head apparatus presses the pinch rollers to the capstan in the recording and reproducing operation mode for recording and reproducing the information signal, and pinches the magnetic tape by the pinch roller and the capstan. In the fast-operating mode of driving at a constant speed and sending the magnetic tape quickly, the pinch roller is separated from the capstan, and the supply side reel made of the supply side of the magnetic tape is freely rotated, and the winding side reel is rotated at the reel drive motor. It rotates and winds a magnetic tape, and it winds around a winding side reel. When the magnetic tape wound on the winding side reel is rolled back on the supply side reel, the pinch roller is separated from the capstan while the winding side reel is free to rotate, and the supply side reel is rotated at high speed by the reel driving motor. Then, the magnetic tape is wound around the supply side reel by driving at high speed.

However, in the conventional recording / reproducing apparatus equipped with the rotating magnetic head device, when the magnetic tape is stopped or the winding is stopped, the driving current of the reel driving motor is interrupted and the driving force of the driving motor is transmitted to the reel. For example, a brake mechanism such as a brake pad is pressed against a part of the transmission mechanism to prevent the side reel or supply side reel, which is wound by the inertia force of the driving motor, even though the driving current is blocked.

In addition, a braking current is applied to the reel drive motor by applying a braking current reverse to that of the drive current in a fast operation mode or a rewind mode, rather than using a forced braking mechanism such as a brake pad. There is also a recording / playback apparatus.

Even when the reel drive motor is stopped using the above-described braking mechanism, even when the reel drive motor is stopped by the braking current, the amount of magnetic tape wound around the tape reel freely rotates. In this case, the tape reel continues to rotate by the inertia force even when the reel driving motor stops, and the magnetic tape is sent out. As a result, there is a problem that looseness occurs in the magnetic tape when the magnetic tape is quickly sent or returned and the winding is stopped.

For example, in the recording and / or reproducing apparatus of the magnetic tape which stops the rotation of the reel driving motor at the braking current, the braking current is gradually reduced so as not to loosen the magnetic tape, that is, applied to the coil of the reel driving motor. It is considered to gradually brake the reel drive motor by gradually decreasing the voltage of the braking current. However, even if the reel drive motor gradually lowers the voltage of the braking current, the braking of the drive motor is excessively strong and the looseness of the magnetic tape cannot be prevented.

The present invention relates to a recording and / or reproducing apparatus using a magnetic tape in a recording medium, and more particularly, to extract a magnetic tape stored in a tape cassette mounted on a cassette mounting portion in the apparatus body by a tape loading mechanism. A recording and / or reproducing apparatus having a tape loading mechanism for loading a tape runway.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a tape cassette used in a tape recorder having a rotating magnetic head device according to the present invention as seen from an upper surface side thereof.

2 is a perspective view of the tape cassette seen from the lower surface side.

3 is a perspective view of the tape cassette with the front cover opened, as seen from the lower side.

Fig. 4 is a plan view showing the mechanism portion of the tape recorder with a rotating magnetic head device according to the present invention.

Fig. 5 is a plan view showing a state in which the magnetic tape is drawn out to the tape running path and wound around the tape guide drum.

6 is a plan view showing a driving force transmission mechanism for transmitting the driving force of the driving motor to the reel shaft gear.

Fig. 7 is a plan view showing a third lead arm portion that is rotated by the movement operating mechanism of the movement guide block.

8 is a cross-sectional view showing the clutch gear attached to the rotation stage.

Fig. 9 is a plan view of a reel shaft selection mechanism showing a state in which magnetic tape is taken out of a tape cassette.

Fig. 10 is a plan view of a reel shaft selection mechanism showing a state in which magnetic tape is drawn out to a tape running path.

Fig. 11 is a plan view showing a reel shaft selecting mechanism when a magnetic tape drawn out to a tape running path and wound around a rotating magnetic head device is driven at a constant speed in the forward direction.

Fig. 12 is a plan view showing a reel axis selecting mechanism when the magnetic tape is traveling in the reverse direction.

Fig. 13 is a plan view showing a reel shaft selecting mechanism when a magnetic tape drawn out to a tape running path is wound on a cassette.

Fig. 14 is a plan view showing a tape recorder of a rotating magnetic head type provided with a tension applying mechanism for giving back tension to a traveling magnetic tape.

Fig. 15 is a cross-sectional view showing a tension applying mechanism for applying back tension to magnetic tape.

16 is a side view illustrating the rotating magnetic head device and the first and second moving guide blocks.

17 is a plan view illustrating the rotating magnetic head device and the first and second moving guide blocks.

18 is a side view illustrating a state in which the second moving guide block is inclined in one direction.

19 is a side view illustrating a state in which the second moving guide block is inclined in the other direction.

20 is a side cross-sectional view showing another example of a mechanism for tilting the second moving guide block.

Fig. 21 is a block diagram showing a recording / playback system of the tape recorder according to the present invention.

Fig. 22 is a perspective view showing a main mechanism part for driving the magnetic tape.

Fig. 23 is a waveform diagram showing a PWM signal for control supplied to a capstan motor for traveling on magnetic tape.

It is an object of the present invention to provide a novel magnetic tape recording and / or reproducing apparatus which can solve the problems of the conventional magnetic tape recording and / or reproducing apparatus as described above.

Another object of the present invention is to provide a magnetic tape recording and / or reproducing apparatus capable of tape loading by preventing damage to the magnetic tape and ensuring reliable protection.

It is still another object of the present invention to provide a magnetic tape recording and / or reproducing apparatus capable of miniaturizing the entire apparatus and simplifying a mechanism for switching the operation mode.

Still another object of the present invention is to reduce the size of the tape loading mechanism which draws out the magnetic tape from the tape cassette attached to the apparatus body and loads it on a predetermined tape path, and records the magnetic tape which can realize the miniaturization of the whole apparatus. And / or to provide a playback device.

Another object of the present invention is to provide a magnetic tape recording and / or reproducing apparatus which can prevent the magnetic tape from being damaged and can reliably load and unload the tape.

It is another object of the present invention to reliably prevent a portion of the tape loading mechanism and a portion of the rotating magnetic head device from contacting during the loading or unloading of the magnetic tape, thereby damaging the tape loading mechanism and / or the rotating magnetic head device. A magnetic tape recording and / or reproducing apparatus is provided.

Still another object of the present invention is to record and / or reproduce magnetic tapes, which makes it possible to adjust and wind the windings on the tape reel without causing the magnetic tape to loosen when the magnetic tape is quickly sent or rewound. In providing a device.

A magnetic tape recording and / or reproducing apparatus according to the present invention proposed to achieve the above object includes a supply side reel gear for sending magnetic tape, a supply side reel gear for rotationally driving the supply side reel, and a winding tape Winding side reel gear to drive side reel and winding side reel. A tape guide drum in which the magnetic tape drawn out from the tape cassette is wound, and a tape loading operation to take out the magnetic tape from the tape cassette and wind the tape wound around the tape guide drum, while separating the magnetic tape from the tape guide drum, And a tape loading mechanism for carrying out an unloading operation for storing, and a switching mechanism for driving the magnetic tape drawn out of the tape cassette by the tape loading mechanism.

The switching mechanism is selectively adapted to the supply side reel gear and the reel side reel gear to selectively drive the position of the supply side reel gear and the reel side reel gear, and between the supply side reel gear and the reel side reel gear. It moves between and away from either side of the reel gear. This switching mechanism includes an intermediate gear positioned between the supply side reel gear and the reel side reel gear during the loading operation of the magnetic tape by the tape loading mechanism. This intermediate gear is provided with a clutch mechanism.

The intermediate gear constituting the switching mechanism is positioned between the supply side reel gear and the winding side reel gear and one of the supply side reel gear and the winding side reel gear after the unloading operation by the tape loading mechanism is completed. It is moved to.

In addition, the tape loading mechanism is inserted into the tape cassette to move a pair of movement guide portions and a pair of movements between a position where the magnetic tape is drawn out of the tape cassette and a position where the magnetic tape taken out of the tape cassette is wound on the tape guide drum. It has a movement control mechanism which moves a guide part. The magnetic tape recording and / or reproducing apparatus also has a driving mechanism for driving the moving operation mechanism of the tape loading mechanism. This drive mechanism is provided with a cam gear which has a cam part which drives a movement operation mechanism, and the slider which is moved by this cam gear and drives a movement operation mechanism.

The magnetic tape recording and / or reproducing apparatus according to the present invention also inclines either of the pair of moving guide portions in the direction away from the tape guide drum when the pair of moving guide portions are moved to a position close to the tape guide drum. Equipped with a control mechanism to let.

The recording and / or reproducing apparatus of the magnetic tape according to the present invention also has supporting means for supporting the tape guide drum with a rotating material, and an operation mechanism is provided on the supporting means.

The mechanism provided on the support means is a protrusion provided on the support means and in contact with the movement guide portion to incline the movement guide portion.

The recording and / or reproducing apparatus of the magnetic tape according to the present invention is also provided with a switching mechanism which is moved by the drive mechanism to selectively fit the intermediate gear to either the supply side reel gear and the winding side reel gear.

The drive mechanism for driving the moving operation mechanism of the tape loading mechanism is provided with a cam gear having a cam portion for driving the switching mechanism, and a slider which is moved by the cam gear and drives the switching mechanism.

In addition, the apparatus for recording and / or reproducing a magnetic tape according to the present invention includes a tape guide drum in which a magnetic tape drawn out from a tape cassette is wound, a position at which the magnetic tape is drawn out of the tape cassette, and the tape is ejected from the tape cassette. A tape take-out mechanism having a pair of moving guide portions for moving the magnetic tape drawn out from the cassette to the tape guide drum and a pair when the pair of moving guide portions are moved to a position close to the tape guide drum It is equipped with an operation mechanism for inclining one of the moving guide portion of the tape guide drum in the direction away from.

The magnetic tape recording and / or reproducing apparatus according to the present invention further includes a supply side reel for feeding the magnetic tape, a winding side reel for winding the magnetic tape, rotation detection means for detecting rotation of the supply side reel and the winding side reel, a capstan and And a traveling mechanism for driving the magnetic tape at a constant speed with the capstan motor for rotationally driving the capstan, and control means for controlling the capstan motor based on the detection result from the detection means. This control means supplies a control signal to the capstan motor in a period until the period of the detection signal from the detection means becomes a predetermined period so that the capstan motor reverses when the traveling speed of the magnetic tape is decelerated by the traveling mechanism.

The control means stops supplying the control signal to the capstan motor when the period of the detection signal from the detection means becomes more than a predetermined period.

The control means generates the duty of the control signal based on the detection result of the supply side reel by the detection means and supplies the duty to the capstan motor.

Further, the control means calculates the amount of magnetic tape wound around the supply side reel based on the detection result by the detection means, and generates a control signal based on the calculated result.

Further, the recording and / or reproducing apparatus of the magnetic tape according to the present invention includes a supply side reel for feeding the magnetic tape, a winding side reel for winding the magnetic tape, rotation detecting means for detecting rotation of the supply side reel and the winding side reel, a capstan, And a traveling mechanism for driving the magnetic tape at a constant speed with the capstan motor for rotating and driving the capstan, and control means for controlling the capstan motor based on the detection result from the detection means. When the tape end is detected, the control means supplies the control signal to the capstan motor until the detection means stops the rotation of the supply side reel and / or the winding side reel.

Another object of the present invention, the specific advantages obtained by the present invention will become more apparent from the description of the embodiments described below.

The following describes an example in which the magnetic tape recording and / or reproducing apparatus according to the present invention is applied to a tape recorder of a rotating magnetic head type which is miniaturized to a portable size.

The tape cassette 1 used for the rotary magnetic head type tape recorder to which the present invention is applied will be described with reference to Figs.

As shown in Fig. 1, the tape cassette 1 stores a pair of tape reels 5 and 6 in a cassette body 4 formed by abutting a pair of upper and lower half 2 and 3 together and rotating them. The magnetic tape 7 is wound to the outside between these tape reels 5 and 6 for storage. As shown in Fig. 3, the magnetic tape 7 is softened to the outer side of the front side of the cassette main body 4 through the tape outlets 8 and 9 formed on both sides of the front side of the cassette main body 4, thereby providing a piece of tape reel. In (5), it is wound outward over the other tape reel 6. On the front side of the cassette body 4, the front cover 11 is provided to protect the magnetic tape 7 which is softened to the front side of the cassette body 4 when the tape cassette 1 is not mounted on the tape recorder. It is attached rotatably. The front cover 11 is rotated in a closed direction to cover the magnetic tape 7 extending on the front side of the cassette body 4 by an unillustrated reversing coil spring attached to the rotation shaft of the front cover 11. It is.

2 to 3, the reel shaft insertion hole 12, 13 provided in the bottom face side of the cassette body 4 when the tape cassette 1 is not mounted on the tape recorder as shown in Figs. ) Is blocked to prevent dust or the like from entering the cassette body 4, and the obstruction plate 14 for protecting the magnetic tape 7 is slid in the front and rear directions so as to be movable. A pair of insertion holes 15 and 16 is drilled in the main surface portion of the obstruction plate 14. When the obstruction plate 14 is moved relative to the rear of the cassette body 4, as shown in Fig. 3, these insertion holes 15, 16 coincide with the reel shaft insertion holes 12, 13, and the tape recorder. The reel drive shaft provided on the side can enter the cassette body 4. Then, the obstruction plate 14 is moved to the whole piece of the tape cassette 1, and as shown in FIG. 2, the magnetic tape 7 formed on the front side of the cassette body 4 is taken out to the outside of the cassette body 4, When the state of closing the lower portion of the space portion 17 facing the tape taking-out means of the tape loading mechanism that performs the loading operation on the tape recorder side, the insertion holes 15 and 16 and the lower half of the obstruction plate 14 are blocked. The reel insertion holes 12 and 13 of 3) are staggered from each other, and these reel shaft insertion holes 12 and 13 are closed at the main surface of the obstruction plate 14.

The tape cassette 1 configured as described above is held in the cassette holder when it is inserted into the cassette inserting / operating tool provided in the apparatus body of the tape recorder, and is mounted in the cassette mounting portion provided in the apparatus body. In the tape cassette 1 held in the cassette holder, the front cover 11 is rotated by the cover opening / closing mechanism provided in the apparatus body in accordance with the movement of the cassette holder in the cassette mounting portion direction, thereby opening the front side of the cassette body 4. . The magnetic tape 7 housed in the cassette body 4 is drawn out of the cassette body 4 by the tape loading mechanism on the tape recorder side, and is extended to the tape running path in the apparatus body to the tape guide drum of the rotating magnetic head device. Winding loading is performed.

As shown in Fig. 4, the tape recorder of the rotating magnetic head method according to the present invention using the tape cassette 1 configured as described above for the recording medium is provided with a tape cassette 1 on the outer side of the case body constituting the tape recorder body. A cassette holder (not shown) rotatably supported between a first position for inserting and a second position for mounting the tape cassette 1 to the cassette mounting portion 22 formed on the base 21; When the cassette holder is rotated to the cassette mounting portion 22 side, the cassette holder is provided with an outer lid which is rotatably attached to the case body which covers the cassette holder.

The tape cassette 1 is mounted to the cassette mounting portion 22 by being rotated on the cassette mounting portion 22 side at a first position where the cassette holder enables insertion and removal of the tape cassette 1. The cassette mounting portion 22 formed on the base 21 is supplied to the tape reels 5 and 6 in the tape cassette 1, respectively, and the tape reels 5 and 6 are rotated to operate the magnetic tape 7. Reel shafts 23 and 24 are wound around the tape reels 5 and 6 to operate. These reel shafts 23 and 24 are rotated via the driving force transmission mechanism 152 which uses the capstan motor 25 as a drive source, mentioned later,

In addition, on the base 21, a rotating magnetic head device 26 is provided in which a magnetic tape 7 drawn out from the tape cassette 1 is wound around the cassette mounting portion 22 on which the reel shafts 23 and 24 are installed. have. Then, the magnetic tape 7 is drawn out from the tape cassette 1 between the cassette mounting portion 22 of the tape cassette 1 and the rotating magnetic head device 26, and has a rotating drum of the rotating magnetic head device 26. A pair of first and second moving guide blocks 27 and 28 are formed to constitute a tape loading mechanism 20 which is wound around the tape guide drum and travels. The first and second moving guide blocks 27 and 28 are covered with a magnetic tape 7, and the magnetic tape 7 is angled to the tape guide drum of the rotating magnetic head device 26, for example, about 160 degrees. Tape guide rollers 29 and inclined guide pins 31 are provided to guide the rolls over the angles of the drawing. The first and second movable guide blocks 27 and 28 are guided to the movable guide grooves 32 and 33 formed in the base 21 so that the tape guide roller 29 and the inclined guide pin 31 are cassette mounting portions 22. In the position shown in FIG. 4 which faces the space 17 of the tape cassette 1 attached to ()), it moves and moves between the position shown in FIG. 5 located on the side of the rotating magnetic head apparatus 26. As shown in FIG.

These first and second moving guide blocks 27 and 28 are moved along the moving guide grooves 32 and 33 by the following guide block moving operation mechanism 151. The first and second moving guide blocks 27 and 28 are operated by a drive motor 34 which is provided independently of the capstan motor 25 for traveling the magnetic tape 7 described above as a drive source. The guide block movement manipulation mechanism 151 is a rotation manipulation mechanism having a drive motor 34, a cam gear 36 connected via a gear mechanism 35, and first and second connection arms 37 and 38. It has the slider 39 connected via 37a.

The gear mechanism 25 is provided with a worm gear 41 attached to a drive shaft of a drive motor 34 and a first gear portion 42a and a second gear portion 42b coaxially fitted with the worm gear 41. A second intermediate shaft having the first intermediate gear 42, the second gear portion 42b of the first intermediate gear 42, and the first gear portion 43a and the second gear portion 43b coaxially fitted thereto; 3rd intermediate gear 44 which coaxially provided the gear 43, the 2nd gear part 43b of the 2nd intermediate gear 43, and the 1st gear part 44a and the 2nd gear part 44b which match | match it. ) And a fourth intermediate gear 45 that fits the cam gear 36 at the same time as it fits with the third gear portion 44b.

As shown in Figs. 4 and 5, the pivoting operation member 37a, which connects between the gear train 35 and the cam gear 36, is arranged in a direction orthogonal to the first and second connection arms 37 and 38. It protrudes and is formed in a substantially L shape with the whole. The pivot operation member 37a is supported by a support shaft 37b provided on the base 21 to which the first and second connection arms 37 and 38 are connected, and rotates around the support shaft 37b. .

The cam gear 36 is formed with a first cam groove 46 for moving the movement guide blocks 27 and 28. The first cam groove 46 is formed along the circumference of the cam gear 36, and the coupling pin 47 provided on the first connection arm 37 extending from the pivoting operation member 37a is engaged. A coupling recess 48 is provided at one end of the second connecting arm 38 extending in a direction orthogonal to the first connecting arm 37 of the pivotal operation member 37a. The coupling pin 48 is coupled to the coupling pin 49 provided on the slider 39. The slider 39 is attached to the moving material in the direction of arrow X ₁ and the arrow X ₂ in FIG. 4. The slider 39 is slid in the direction of arrow X ₁ and arrow X _{2 in} FIG. 4 via the first and second connection arms 37, 38 as the cam gear 36 is rotated. This slider 39 is moved between the unloading position moved in the direction of the arrow X ₁ in FIGS. 4 and 5 and the loading position moved in the direction of the arrow X _{2 in} FIGS. 4 and 5.

On the other hand, as shown in FIG. 6, the 1st and 2nd movement guide blocks 27 and 28 are attached to the front-end | tip side of the 1st connection arm 51, 51 via the support shaft 51a, 51a by rotation material. . These first connecting arms 51 and 51 are rotatably supported on the proximal end side via the support shafts 52a and 52a on the front end side of the second connecting arms 52 and 52. The second connecting arms 52 and 52 support shafts on the front end side of the third connecting arms 53 and 53 rotatably supporting the proximal ends on the support shafts 53a and 53a upright on the base 21. It is rotatably supported via 43b and 53b.

On the support shafts 53a and 53a supporting the third connecting arms 53 and 53, as shown in FIG. 7, the limiter plates 54 and 55 having gears 54a and 54a meshed with each other are formed on the outer circumference thereof. It is attached rotatably. In other words, the third connecting arms 53 and 53 and the limiter plates 54 and 55 are coaxially attached via the supporting shafts 53a and 5a, respectively. Coil springs 59 and 60 are interposed between the third connecting arms 53 and 53 and the limiter plates 54 and 55, respectively. The first bit of the coil spring 59 latches the distal end of one arm portion 59a to a spring latching piece 59b formed at the proximal end of the third connecting arm 53. 59c is fastened to the spring retaining piece 59d formed in the outer peripheral part of the one-piece limiter plate 54, and is attached. The first bit is a coil spring 59 is applied a force in the direction in which the first and second arm portions 59a, 59c are spaced apart from each other, so that the third bit of the third connecting arm 53 is the first bit of the coil spring. The rotation force is applied in the direction of arrow A in FIG.

The second bit of the coil spring 60 latches the tip of one arm portion 60a to a spring retaining piece 60b formed by bending at the proximal end of the third connecting arm 53 on the other side, and the arm portion on the other side. 60c is attached to the spring holding piece 60d provided in the outer peripheral part of the other limiter plate 55, and is attached. The second bit is a coil spring 60 is applied a force in the direction in which the first and second arm parts (60a, 60c) are spaced apart from each other, so that the third bit of the other connecting arm 53, the second bit is a coil spring Under the force of 60, rotation is applied in the direction of arrow B in FIG.

On the other limiter plate 55, a cam hole 57 is drilled. The support pin 58 provided in the slider 39 is engaged with this cam hole 57.

However, the third connecting arms 53 and 53 move the first and second movements supported by the first connecting arms 51 and 51 connected to the connecting arms 53 and 53 via the second connecting arms 52 and 52. When the guide blocks 27 and 28 are moved to the ends of the movement guide grooves 32 and 33, respectively, the first and second bits are subjected to the force of the coil springs 59 and 60, respectively, to the arrows A in FIG. Direction and an arrow B direction are rotated, and the first and second moving guide blocks 27 and 28 are pressed against the positioning members 27a and 28a.

When the driving motor 34 is driven, the guide block moving operation mechanism 151 rotates the cam gear 36 via the gear mechanism 35 and the slider via the first and second connection arms 37 and 38. 39 moves. When the slider 39 is moved, the other limiter plate 55 on which the support pin 58 provided on the slider 39 is coupled to the cam hole 57 is rotated about the support shaft 53a. When the other limiter plate 55 is rotated, the one limiter plate 54 provided with the gear portion 54a for fitting it to the gear portion 55a provided on the limiter plate 55 is different from the support shaft 53a. It rotates in the reverse direction to the convenience limiter plate 55. The first and second movable guide blocks 27 and 28 are guided to the movable guide grooves 32 and 33 via the first to third connecting arms 51, 52 and 53 and mounted to the cassette mounting portion 22. With the position shown in FIG. 5 which is the loading completion position of the magnetic tape 5 located in the side piece side of the rotating magnetic head apparatus 26 in the position shown in FIG. 4 which faces the space 17 of the tape cassette 1. It is moved between. As a result, the magnetic tape 7 in the tape cassette 1 is taken out of the tape cassette 1 and wound around the tape guide drum of the rotating magnetic head device 26 as shown in FIG.

Between the cassette mounting portion 22 and the rotating magnetic head device 26, the magnetic tape 7 is pressed against the capstan shaft 61, which is the drive shaft of the capstan motor 25 for driving operation, and the magnetic tape 7 is clamped and fixed. A pinch roller support arm 63 attached to the tip side of the pinch roller 62 for driving, a tape guide support arm 65 with a tape guide 64 upright at the tip, and a tape guide 66 at the tip. A tape guide support arm 67 is mounted so as to be rotatable.

The pinch roller support arm 63 supports the proximal end to the support shaft 68, and is attached to the support shaft 68 by rotation. On the support shaft 68, a pinch roller support arm 63 and a pressure lever 69 for pressurizing and operating the tape guide support arm 65 are coaxially attached. At one end of the pressing lever 69, a pressing protrusion 71 for pressing the tape guide supporting arm 65 is provided. On the other hand, the tape guide support arm 65 is provided with a toggle spring 74 between the locking projection 72 provided thereon and the locking projection 73 standing upright on the base 21.

The pinch roller support arm 63 is formed of the rotary magnetic head device 26 at the position shown in FIG. 4 where the first and second movable guide blocks 27 and 28 face the space 17 of the tape cassette 1. When it is moved to the loading completion position of the magnetic tape 7 which is the position shown in FIG. 5 located in the side piece, the pinch roller 62 is a capstan at the position shown in FIG. 4 of the cassette mounting part 22 side by the link mechanism not shown. It becomes the state which can be rotated to the position shown in FIG. 5 crimped | bonded to the shaft 61. FIG. At this time, the pressure lever 69 is also rotated from the position of the cassette mounting part 22 side shown in FIG. 4 to the position of the capstan shaft 61 side shown in FIG. Then, the pressure lever 69 presses the tape guide support arm 65 by the pressure protrusion 71. The tape guide support arm 65 is moved in the direction in which the magnetic tape 7 is wound around the gasstan shaft 61 at the position shown in FIG. 4 under the force of the toggle spring 74 as shown in FIG. 5. do.

In addition, the tape guide support arm 67 is pivotally operated around the support shaft 75 so that the tape guide 66 faces the inner side of the base 21 shown in FIG. 4 at the outer side of the base 21 shown in FIG. It is moved to the position toward. In addition, the rotation direction of the tape guide support arm 67 is controlled by a toggle spring 84 provided over the locking projection 82 provided thereon and the locking projection 83 upright on the base 21. The rotation operation of the tape guide support arm 67 is performed via the rotation lever 76. The pivoting lever 76 has a guide pin 77 standing upright at one end thereof, and is coupled to a guide hole 85 provided by a tape guide support arm 67. In addition, the tape guide support arm 67 is rotated about the support shaft 75 upright on the base 21. Moreover, the cam lever 79 which becomes concave at the side edge of the rotational lever 76 is formed, and the pressing pin 81 provided in the slider 39 is in contact.

Thus, the tape guide support arm 67 associated with the slider 39 moves the cam portion 79 of the rotation lever 76 to the pressing pin 81 when the slider 39 is moved in the direction of the arrow X ₂ in FIG. while at the same time the pressure, and rotates in the rotation lever of the Fig 76, the direction arrow (X ₃₎ it is to be rotated in the same direction as the rotation lever 76. Thereby, the tape guide 66 is moved to the position toward the outer side of the base 21 shown in FIG. 5 from the position toward the inner side of the base 21 shown in FIG.

In the tape recorder having the tape loading mechanism 20 having the above-described configuration, when the tape cassette 1 is mounted on the cassette mounting portion 22, the magnetic tape 7 is first and second moving guide blocks 27 and 28. The tape guide roller 29 and the inclined guide pin 31 are pulled out and wound around the rotating magnetic head device 26. The magnetic tape 7 spans the tape guide 66 and the tape guide 86 upright on the base 21, and the tape guide roller 29 and the inclined guide pin 31 of the first moving guide block 27. It is wound around the rotating magnetic head device 26 via. In addition, the magnetic tape 7 sent out from the rotating magnetic head device 26 may include the inclined guide pin 31 of the second moving guide block 28, the tape guide roller 29, and a tape guide standing upright on the base 21. It is pinched by the capstan shaft 61 and the pinch roller 62 via 62a, spans the tape guide pin 64, and reaches the tape reel 24 of the winding side in the tape cassette 1 after that.

The driving force transmission mechanism 152 for rotating the reel shafts 23 and 24 using the above-described capstan motor 25 as a driving source is described in detail with reference to FIG. Explain.

This driving force transmission mechanism 152 is attached to the capstan shaft 61 which is the drive shaft of the capstan motor 25 as shown in FIG. 6, and the capstan gear 87 which rotates integrally with the capstan shaft 61, and this capstan A first drive transmission gear 88 having a large diameter first gear portion 88a and a small diameter second gear portion 88b integrally formed coaxially with the gear 87, and the first drive transmission gear; And a second drive transmission gear 89 to fit the second gear portion 88b of 88, and a third drive transmission gear 91 to fit the second pit transfer gear 89. In addition, the drive transmission gear 152 has a fourth drive transmission gear 93 which is axially supported by the support shaft 92 serving as the rotation support point of the rotation base 98, which will be described later in detail. In this fourth drive transmission gear 93, the first gear portion 93a having a large diameter and the second gear portion 93b having a small diameter are integrally provided coaxially, and the first gear portion 93a has a third drive. This is matched to the transmission gear 91, the second gear portion (93b) is matched to the clutch gear 99 that is axially supported by the rotating base (98).

In addition, the detailed description of this clutch gear 99 is mentioned later.

On the other hand, reel shaft gears 94 and 95 are integrally attached to the reel shafts 23 and 24 coaxially with these, and the reel shaft gears 94 and 95 are rotated via the base 21 via supporting shafts 96a and 97a. The reel shaft drive gears 96 and 97 supported by the shaft are setting this up. Reel shaft (23, 24) is rotated around the support shaft 92, the rotation base 98, and to match it to either of the reel shaft drive gear (96, 97).

Next, the reel shaft selecting mechanism 153 for selecting either of the reel shafts 23 and 24 will be described in detail with reference to FIGS. 6 and 8 to 13.

As shown in FIG. 6, the reel shaft selection mechanism 153 uses a cam gear 36 and a coupling pin 47 provided on the first connection arm 37 in the first cam groove 46 of the cam gear 36. A slider 39 constituting the guide block movement manipulation mechanism 151 which is moved through the combined rotation manipulation member 37a, and a reel shaft selection slider 101 attached to the slider 39 so as to be movable in parallel with the slider 39; And a connecting member rotatably attached to the reel shaft selection slider 101 and a revolving member attached to the reel shaft selecting slider 101 to connect the rotating base 98 to the rotating material ( 103).

The cam gear 36 is provided with a second cam groove 104 on the inner circumferential side of the first cam groove 46 described above. The second cam groove 104 is coupled to a coupling pin 105 standing upright at one end of the reel shaft selection slider 101. The reel shaft selection slider 101 is moved in the direction of arrow X ₁ and arrow X _{2 in} FIG. 6 as the cam gear 36 is rotated, and the rotating base 98 is attached via the connecting member 103. Rotate in the direction of arrow X ₃ or arrow X ₄ in FIG. 6.

The reel axis selection slider 101 is attached to the base 21 so as to be movable in the direction of arrow X ₁ or arrow X _{2 in} FIG. 6 in parallel with the slider 39. The reel shaft selection slider 101 moves the first position moved in the direction of the arrow X _{1 in} Fig. 6 for constant traveling of the magnetic tape 7 in the forward direction and in Fig. 6 for driving the magnetic tape 7 in the rotational direction. of it is selectively moved to the intermediate position of the three position of the neutral position of the second position and, the first and second position, move in the arrow (X ₂₎ direction. The revolving lever 102 is pivotally attached to the reel shaft selection slider 101 with the support shaft 106 standing thereon as the pivot support point in the direction of arrow X ₅ or arrow X _{6 in} FIG. It is. In between the rotary lever 102 and the slider rilchuk 101 for selection, and a spring 107 attached to toggle, once the lever 102 is ended by an arrow (X ₆₎ direction in FIG. The push pin 108 is erected on the pivoting lever 102. This to-be-pressed pin 108 is pressed by the cam part 109 provided in the slider 39 provided in parallel with the upper side of FIG. 6 of the reel shaft selection slider 101. As shown in FIG. The cam portion 109 is formed with an inclined surface to protrude toward the reel axis selection slider 101 side. The push pin 108 is pressed by the cam portion 109 by moving the slider 39 in the direction of arrow X _{1 in} FIG. 6, for example, and moves the pivot lever 102 in the direction of arrow X ₅ in FIG. 6. As a result, it rotates in response to the force of the toggle spring 107.

On the reel shaft selection slider 101, a support shaft 111 is erected upright on the side of the base 21, and a connecting member 103 is attached to the reel shaft by using the support shaft 111 as a pivot support point. The restricting pin 11 is formed on the connecting member 103. The regulating pin 112 has an opening 114 formed by a cross section of a recess 113 provided at the lower side of the reel shaft selection slider 101 in FIG. 6 and a rotation lever 102 covering a part of the recess 113. To face the outer side through On the side where the support shaft 111 is not installed, the pivot member 98 is attached to the connecting member 103 in the arrow (X ₃ ) direction or the arrow (X ₄ ) direction in FIG. 6 with the support shaft 110 as the pivot support point. It is.

The rotation base 98 uses the capstan motor 25 as the driving source to support the support shaft 92 of the fourth driving force transmission gear 93 constituting the driving force transmission mechanism 152 for rotating the reel shafts 23 and 24. of FIG. 6, the rotation supporting point is attached to the rotating material in the arrow ₍₃ X) direction or the direction of the arrow (X _4). The rotating base 98 is rotated via the connecting member 103 by moving the reel shaft selection slider 101 to the arrow X _{2 in the} direction of the arrow X ₁ in FIG. 6. The fourth drive transmission gear 93 and the clutch gear 99 described above are provided in the rotation stand 98.

As shown in FIG. 7, the clutch gear 99 includes an upper gear 117 axially supported by an upper shaft 116 erected to the rotation base 98, and a base 118 integrally formed with the support shaft 93. It has a lower gear portion 121 that is supported by the lower shaft portion 119, which is upright. The first compression coil spring 122 is installed between the upper gear part 117 and the rotational base 98, and the second compression coil spring 123 is disposed between the lower gear part 119 and the base 118. Is installed. Friction members 124 and 125 made of felt or the like having a large coefficient of friction are provided on the surface of the upper gear portion 117 and the lower gear portion 121 facing each other. The upper gear part 117 and the lower gear part 121 are pressurized by the predetermined coil force by the compression coil springs 122 and 123, and the friction members 124 and 125 are press-contacted. The upper gear part 117 fits it to the gear part 93b of the fourth drive force transmission gear 93, and the lower gear part 119 fits it to either of the reel shaft drive gears 96 and 97. When a large load is applied to the lower gear part 119, slippage occurs between the friction member 125 of the lower gear part 119 and the friction member 124 of the upper gear part 117, and the upper gear part 117 It is regulated to put a large load on the

As shown in FIG. 6, the rotating base 98 equipped with the clutch gear 99 has a clutch gear 9 via a driving force transmission mechanism 152 in which the capstan motor 25 is driven to rotate the reel shafts 23 and 24. Is rotated in the direction of arrow X ₃ or arrow X _{4 in} FIG. 6. The clutch gear 99 fits to either of the reel shaft drive gears 96 and 97. In addition, the rotation base 98 is forcibly moved to the arrow (X ₃ ) direction or the arrow (X ₄ ) direction by forcibly moving the reel shaft selection slider 101 in the arrow (X ₁ ) direction or the arrow (X ₂ ) direction in FIG. 6. Is rotated.

Next, the operation of the reel shaft selection mechanism 153 described above will be described with reference to FIGS. 6 and 9 to 13.

First, the tape cassette 1 is mounted on the cassette mounting portion 22 of the tape recorder, and FIG. 9 is shown for a loading start position for loading the magnetic tape 7 on the tape runway shown in FIG. Explain using

In this state, the slider 39 is in the unloading position moved in the direction of the arrow X ₁ in FIG. 9. The slider (101) for selecting rilchuk is in a moving state in Fig. 9, arrow (X ₂₎ direction of. At this time, the rotating lever 102 is in a state in which the pins 108 provided thereon are pressed against the cam portion 109 of the slider 39 and rotated in the direction of an arrow X _{5 in} FIG. 9. In addition, the regulation pin 112 is in contact with the end surface of the rotation lever 102. The rotation base 98 is in an intermediate position, and the clutch gear 9 is in a state where neither of the reel shaft drive gears 96 and 97 is engaged. Therefore, the tape reels 5 and 6 of the tape cassette 1 are in a rotatable state, and the above-described first and second moving guide blocks 27 and 28 face the space 17 of the tape cassette 1. As shown in FIG. 5, the magnetic tape 7 is taken out from the tape cassette 1 by moving to the position touching the side of the rotating magnetic head device 26, and the tape guide of the rotating magnetic head device 26 is shown. It winds up around a drum and becomes a state which can run, and extends it to the tape runway shown in FIG.

When the magnetic tape 7 is wound around the tape guiding drum of the rotating magnetic head device 26 and is ready to run, the tape recorder is first put into a stopped state. In the stationary state, the reel shaft selecting mechanism 153 moves the slider 39 from the unloading position to the loading position moved in the direction of the arrow X ₁ in FIG. 10 as shown in FIG. On the other hand, the reel axis selection slider 101 is placed at an intermediate position moved in the direction of the arrow X ₁ in FIG. The reel shaft selection slider 101 is moved in the direction of arrow X ₁ in FIG. 10 to rotate in the direction shown by arrow X _{3 in} FIG. 10 in the state shown in FIG. Let's do it. Accordingly, the clutch gear 9 is in a state in which neither of the reel shaft drive gears 96 and 97 is aligned with it. The pivoting lever 102 moves the slider 39 in the direction of arrow (X ₂ ) in FIG. 10, and the reel shaft selection slider 101 in the direction of the arrow (X ₁ ) in FIG. 10. is a non-pressurized state the cam 109 is rotated in the direction of biasing force receiving call arrow (X ₆₎ of Fig. 10 of the toggle spring 107. Even in this state, the restricting pin 112 is in contact with the end face of the rotation lever 102 and is regulated by the recess 113.

However, the reel shaft selection slider 101 is similar to the above-mentioned stop state even in the fast-operating mode for fast driving the magnetic tape 7 in the forward direction and the winding operation mode for high-speed running the magnetic tape 7 in the reverse direction. 10 is placed at the intermediate position moved in the direction of the arrow X ₁ in FIG. 10, and the clutch gear 9 is not aligned with any of the reel shaft drive gears 96 and 97. FIG.

Next, in the tape recorder according to the present invention, the magnetic tape 7 travels from one tape reel 23 side to the other tape reel 24 side in the stop mode in which the running of the magnetic tape 7 is stopped. The state in the case where the recording and / or reproducing operation mode in which the information signal is recorded and / or reproduced in the forward direction in the direction of the five arrow S is selected will be described with reference to FIG.

When the tape recorder according to the present invention is selected in the forward recording and / or reproducing operation mode, the drive motor 34 is selected, and the cam gear 36 is driven by the drive motor 34 via the gear train 35. Is rotated in the direction of an arrow R ₁ in FIG. 11. At this time, the slider 39 connected to the cam gear 36 via the rotational operation member 37a is maintained with the magnetic tape 7 loaded on the tape runway as shown in FIG. At this time, the rotation operation member 37a is placed in a state in which the coupling pin 47 is coupled to the concentric circle portion 46a of the cam groove 46, so that the cam gear 36 rotates in the direction of the arrow R ₁ in FIG. Rotation about the support shaft 37b is not performed. Since the rotating operation member 37a is rotated, the slider 39 constituting the reel shaft selecting mechanism 153 is maintained with the magnetic tape 7 loaded on the tape runway. On the other hand, because the slider 101 for rilchuk selection is coupled to the engagement pin 105 to the second cam groove 104 of the cam gear 36 being rotated in a cam gear 36 of the Figure 11 arrows (R ₁₎ the direction the The coupling pin 105 is moved along the two cam grooves 104 and is moved in the direction of an arrow X _{1 in} FIG. 11. When the reel shaft selection slider 101 is moved to the left side in FIG. 11, the reel shaft 24 on the winding side is rotated by rotating the pivot stand 98 in the direction of arrow X ₃ in FIG. 11 at the intermediate position shown in FIG. 10. To match the teeth of the clutch gear 9 to the reel shaft drive gear 97. In addition, the rotating lever 102 is maintained in the direction of arrow X _{6 in} FIG. 11 by the biasing force of the toggle spring 107 in the same manner as shown in FIG. 10. At this time, the connecting member 153 is not rotated by the movement of the reel shaft selection slider 101 because the restricting pin 113 is in contact with the end surface of the pivoting lever 102 and the movement is restricted by the recess 113. The rotation base 98 is rotated only by the movement of the reel axis selection slider 101.

When the magnetic tape 7 travels in the forward direction of the arrow S in FIG. 5, the winding diameter of the magnetic tape 7 wound around the tape reel 5 coupled to the reel shaft 24 on the winding side is the magnetic tape. It varies with the amount of winding in (7). When the amount of the magnetic tape 7 wound around the tape reel 5 on the winding side increases, the speed at which the magnetic tape 7 is wound on the tape reel 5 is faster than the speed at which the capstan shaft 61 runs at constant speed. Then, more tension than necessary is applied to the magnetic tape 7. At this time, slippage is generated between the friction members 124 and 125 of the clutch gear 99 that fits the reel shaft drive gear 97, thereby preventing the magnetic tape 7 from applying more tension than necessary. This also applies to the case where the magnetic tape 7 described later runs in the reverse direction of the reverse direction.

Next, the magnetic tape 7 travels in the reverse direction in the direction of the arrow T in FIG. 5 traveling from the other tape reel 24 side toward the other tape reel 23 side, and recorded on the magnetic tape 7. The state in the case where the reverse driving mode for selecting information or rewriting subcodes is selected will be described with reference to FIG.

When the driving mode in the reverse direction of the tape recorder according to the present invention is selected, the drive motor 34 is driven, and the cam gear 36 is driven by the drive motor 34 via the gear train 35. Rotate in the direction of arrow R ₁ . At this time, the slider 39 connected to the cam gear 36 via the rotational operation member 37a is maintained in a state in which the magnetic tape 7 is loaded on the tape traveling path as shown in FIG. At this time, the rotation operation member 37a is placed in a state in which the coupling pin 47 is coupled to the concentric circle portion 46a of the cam groove 46, so that the cam gear 36 rotates in the direction of the arrow R ₁ in FIG. Rotation about the support shaft 37b is not performed. Since the rotating operation member 37a is not rotated, the slider 39 constituting the reel shaft selecting mechanism 153 is the same as when the recording and / or reproducing mode is selected in which the magnetic tape is driven at constant speed in the forward direction described above. The magnetic tape 7 is kept loaded with the tape traveling path. On the other hand for the Lil selected slider 101 is coupled to the coupling pin 105 in the second cam groove 104 of the cam gear 36, so by being rotated in a cam gear 36 of the Figure 11 arrows (R ₁₎ the direction the The coupling pin 105 is moved along the two grooves 104 and is moved in the direction of an arrow X _{2 in} FIG. 12. When the reel selection slider 101 is moved to the postal end in Fig. 12, the pivot base 98 is moved in the direction of the arrow X ₄ in Fig. 11 at the intermediate position shown in Fig. 10, and the reel shaft 24 on the supply side is rotated. To match the teeth of the clutch gear 99 to the reel shaft drive gear 96. In the same manner as the state shown in FIG. 10, the pivoting lever 102 is moved in the direction of arrow X _{6 in} FIG. 11 by the force of the toggle spring 107. At this time, the connecting member 103 is not rotated by the movement of the reel shaft selection slider 101 because the restricting pin 113 is in contact with the end surface of the pivoting lever 102 and the movement is restricted by the recess 113. . The rotation base 98 is rotated only by the movement of the reel axis selection slider 101.

The state selected as the traveling operation mode in the reverse direction is almost the same as the state when starting unloading of the magnetic tape 7 drawn out to the tape traveling path in the tape cassette 1. That is, the slider 39 and the reel axis selection slider 101 are placed at the position shown in FIG.

Next, the unloading which winds the magnetic tape 7 drawn out to the tape running path in the tape cassette 1 is demonstrated with reference to FIG.

To perform the unloading, the drive motor 34 is driven, and the cam gear 36 is rotated in the direction of the arrow R ₁ in FIG. 13 via the gear train 35. When the cam gear 36 rotates in the direction of the arrow R ₁ in FIG. 13, the coupling pin 47 of the pivoting operation member 37a coupled to the first cam groove 46 is the concentric portion 46a of the first cam groove 46. ) To the eccentric portion 46b, and the rotational operation member 37a is rotated in the direction of the arrow G in FIG. 5 by moving the coupling pin 47 along the eccentric portion 46b.

When the turning operation member 37a rotates in the direction of arrow G in FIG. 5, the slider 39 connected to the turning operation member 37a is moved in the direction of arrow X ₁ in FIG. 13. At this time, the pinch roller support arm 63 connected to the cam gear 36 via a link mechanism not shown is rotated in the direction away from the capstan shaft 61, and the pinch roller 62 is separated from the capstan shaft 61. , The magnetic tape 7 is released.

When the slider 39 is moved in the direction of the arrow X ₁ in FIG. 13, the limiter plate 55 connected to the slider 39 is rotated in the direction of the half arrow B in FIG. 7, and the third connecting arm 53 on the other side is rotated. ) Is rotated in the direction of half arrow (B) in FIG. 7. One limiter plate 54 in which the gear portion 55b of the limiter plate 55 fits the teeth of the gear 55a is rotated in the direction of the half arrow A in FIG. 7 in synchronization with the other limiter plate 55. One third connecting arm 53 is rotated in the direction of half arrow A in FIG.

When the pair of third connecting arms 53 and 53 rotate in synchronization with each other in the direction of the half arrow B and the half arrow A in FIG. 7, the second connecting arm connected to the connecting arms 53 and 53 ( 52., 52 are rotated in the direction of the half arrow (B) and the half arrow (A) in FIG. 7, and are on the front end side of the first connecting arms 51, 51 connected to the second connecting arms 52, 52. FIG. The supported movement guide blocks 27 and 28 are guided by the movement guide grooves 32 and 33, and are moved to the cassette mounting portion 22 side at the position on the side of the rotating magnetic head device 26, and the cassette mounting portion 22 is moved. It moves to the position which faces the space part 17 of the tape cassette 1 attached to it.

At this time, the reel axis selection slider 101 is moved in the direction of arrow X ₂ in FIG. 13 in the same position as that shown in FIG. 12 in which the reverse driving mode for driving the magnetic tape 7 in the reverse direction is selected. have. Since the reel shaft selection slider 101 is moved in the direction of the arrow X ₂ in FIG. 13, the pivoting lever 102 is pressed by the cam portion 109 of the slider 39. It will be rotated in the direction of the 13 arrow (X ₅ ). At this time, the regulating pin 112 is located in the opening 114 constituted by the cross section of the rotation lever 102 and the recess 113 provided in the reel shaft selection slider 101, and moves within the range of the opening 114. It will be placed as possible.

The rotating base 98 is maintained in a state in which the reel shaft selection slider 101 is in an inoperative state and rotated in the direction of the arrow X _{4 in} FIG. 13, and the clutch gear 99 and the reel shaft rotating drive gear 96 are rotated. Remains engaged.

However, the capstan motor 25 continues to rotate during the operation of unloading the magnetic tape 7 drawn out from the tape running path of the apparatus main body, and the reel shaft 23 on the tape supply side passes through the driving force transmission mechanism 152 described above. It is rotated and wound around the tape reel 6 on the supply side.

When the magnetic tape 7 is unloaded, a large tension is applied to the magnetic tape 7 while the winding speed of the supply side to the tape reel 6 and the moving speeds of the first and second moving guide blocks 27 and 28 are staggered. In this case, slippage is generated between the friction members 124 and 125 of the clutch gear 99, and a large tension is prevented from being applied to the magnetic tape 7.

The magnetic tape 7 is wound in the tape cassette 1, and then the cassette holder holding the tape cassette 1 is moved in the direction away from the cassette mounting portion 22, the tape cassette 1 is ejected, and the cassette is again loaded. The state in which the new tape cassette 1 is held in the holder, the cassette mounting portion 22 is mounted, and the magnetic tape 7 is loaded is described.

First, when the tape cassette 1 mounted on the cassette mounting portion 22 is taken out, the pivoting lever 102 constituting the reel shaft selecting mechanism 153, as described above, moves the push pin 108 to the slider 39. Presses the cam portion 109 so as to be rotated in the direction indicated by the arrow X _{5 in} FIG. 13, and the restricting pin 112 is provided with a recess provided in the cross section of the pivot lever 102 and the reel shaft selection slider 101. It is placed in a movable state within the range of the opening 114 constituted by 113.

Here, when the capstan motor 25 is driven, the clutch gear 99 is rotated via the driving force transmission mechanism 152, and the rotation base 98 is directed to the arrow shaft X _{3 in} FIG. 13 with the support shaft 92 as the center. Is rotated to a neutral position where none of the reel shaft drive gears 96 and 97 shown in FIG. 9 are engaged with the clutch gear 99 engaged with the reel shaft drive gear 96. In this way, the rotating base 98 is rotated by the driving force of the capstan motor 25 and moved to the neutral position in the state in which it is engaged with the reel shaft drive gear 96 so as to be magnetic in the tape cassette 1 mounted on the cassette mounting portion 22. The tape 7 is taken out, extended to the tape running path in the apparatus main body, and brought into a state shown in FIG. 9 which enables tape loading to be wound around the tape guide drum of the rotating magnetic head device 26.

In this way, the rotation base 98 is rotated by the capstan motor 25 without using the reel shaft selection mechanism 153 including the cam gear 36, the slider 39, and the reel shaft selection slider 101. As a result, the tape can be switched to the tape loading state of the magnetic tape 7 while the magnetic tape 7 is unloaded, so that the tape loading can be performed quickly. Further, the first and second cam grooves 46 and 104 provided in the cam gear 36 for controlling the movement of the slider 39 and the reel axis selection slider 101 can be simplified, and the operation mode of the tape recorder can be switched. It can also be performed quickly.

Next, a tape recorder of a rotary magnetic head type provided with a tension applying mechanism 200 for giving back tension to the magnetic tape 7 traveling in the forward or reverse direction will be described with reference to FIG.

In the tape recorder of the rotary magnetic head method, the same members as those of the tape recorder of the rotary magnetic head method are denoted by the same reference numerals and detailed description thereof will be omitted.

As shown in Fig. 14, the tension applying mechanism 200 provides a first clutch gear 201 for applying a back tension to the magnetic tape 7 engaged with the reel shaft gear 94 for rotating the reel shaft 23 on the supply side. ) And a second clutch gear 202 which imparts back tension to the magnetic tape 7 which is engaged with the reel shaft gear 95 for rotating the reel shaft 24 on the winding side.

As shown in FIG. 15, the first clutch gear 201 is coaxially attached to the first gear portion 204 supported by the shaft portion 203 upright on the base 21 and the first gear portion 204. And a second gear part 205 to be used. A pressure spring 206 is installed between the first gear portion 204 and the base 21. The pressure spring 206 adds the second gear portion 205 in the direction of the first gear portion 204. A friction member 207 made of felt or the like having a large friction coefficient is provided between the first gear portion 204 and the second gear portion 305. That is, the second gear portion 205 is pressurized by the biasing force in the direction of the first gear portion 204 by the pressure spring 206, and the friction member 20 & is pressed against the first gear portion 204. have. The supply gear reel gear 94 meshes with the first gear portion 204.

In addition, a first lock lever 208 that selectively locks the rotation of the first clutch gear 201 is selectively engaged with the second gear portion 205. As shown in Figs. 14 and 15, the first rock lever 208 is pivotally supported by the support shaft 209, which is upright on the base 21. As shown in Figs. The first lock lever 208 is provided with a locking portion 213 at the distal end thereof which is locked to the second gear portion 205 of the first clutch gear 201. In addition, one end of the first lock lever 208 is engaged by the guide shaft 211 which guides the moving direction of the reel shaft selection slider 101, and the other end of the first lock lever 208 is provided in the locking projection 212 provided in the first lock lever 208. The locked bit is biased by the coil spring 216 in the direction of arrow P in FIG. 14 in the direction of the first gear portion 205 of the first clutch gear 201.

On the proximal side of the first lock lever 208, a cam portion 214 is provided. The cam portion 214 is composed of an inclined surface portion 214a and a horizontal surface portion 214b. The cam portion 214 is in contact with the first control protrusion 215, which is erected on one side of the reel shaft selection slider 101. As shown in FIG. That is, when the first control projection 215 is in contact with the horizontal surface portion 214b, the first lock lever 208 is prevented from rotating in the direction of the arrow P in FIG. 14, and the first control projection 215 is When it contacts the inclined surface part 214a, it rotates to the arrow P direction of FIG. 14, and is latched by the 2nd gear part 205 of the 1st clutch gear 201. As shown in FIG. When the rotation of the first clutch gear 201 is controlled by the first lock lever 208, the first clutch gear 201 slips between the friction member 207, the first gear 204, and the second gear part 205. A load can be applied to the reel shaft gear 94 meshed with the first gear portion 204.

The first lock member 208 is attached to the base 21 by the screw 218 using the attachment member 217.

The second clutch gear 202 meshes with a reel shaft gear 95 for rotating the reel shaft 24 on the winding side. The second clutch gear 202 is denoted by the same reference numerals for the same configuration as the above-described first clutch gear 201, and detailed description thereof will be omitted.

A second lock lever 221 that selectively locks the rotation of the second clutch gear 202 is selectively engaged with the second clutch gear 202. As shown in FIG. 14, the 2nd lock lever 221 is pivotally supported by the support shaft 222 standing upright on the base 21. As shown in FIG. At the distal end of the second lock lever 221, a locking portion 223 held by the second gear portion 205 of the second clutch gear 202 is provided.

One end of the second lock lever 221 is engaged by the guide shaft 224 for guiding the moving direction of the slider 39, and the other end of the second lock lever 221 is engaged by the locking protrusion 225 installed in the second lock lever 221. The coil spring 226 is biased in the direction of the arrow Q in FIG. 14 in the direction of the second clutch gear 202. On the proximal end of the second lock lever 221, a cam portion 227 is provided. The cam portion 227 includes an inclined surface portion 227a and a horizontal surface portion 227b. The cam portion 227 is in contact with the second control projection 228, which is standing upright on the other side of the reel shaft selection slider 101. That is, when the second control protrusion 228 is in contact with the horizontal surface portion 227b, the lock lever 221 is prevented from rotating in the direction of the arrow Q in FIG. 14, and the second control protrusion 228 is inclined. When it contacts the part 227a, it rotates to the arrow Q direction of FIG. 14, and is latched by the 2nd clutch gear 202. As shown in FIG. In addition, the second clutch gear 202 generates slippage between the friction member 207, the first gear 204, and the second gear part 205 when the rotation is controlled by the second lock lever 221. A load may be applied to the reel shaft gear 95 having teeth engaged with the first gear portion 204.

The tension imparting mechanism 200 configured as described above operates as follows.

In the tape loading start state shown in FIG. 9 in which the magnetic tape 7 is taken out of the tape cassette 1 and softened to a predetermined tape running path, the reel shaft selection slider 101 is in the direction of an arrow X ₂ in FIG. 9. Is in a moved state. At this time, in the first lock lever 208, as shown in Fig. 14, the control protrusion 215 provided on one side of the reel shaft selection slider 101 contacts the horizontal surface portion 214b of the cam portion 214, and the first It is in the state separated from the clutch gear 201.

Next, the second lock lever 221 has a control protrusion 228 provided on the other side of the reel shaft selection slider 101 in contact with the inclined surface portion 227a of the cam portion 227, and the bit of the coil spring 226. Receiving a force, it rotates to the 2nd clutch gear 202 side, and is put in the state engaged with the 2nd clutch gear 202. As shown in FIG. In other words, since the first clutch gear 201 on the supply side is not locked by the first lock lever 208 and is in a rotatable state, the reel shaft gear 94 in which the first clutch gear 201 is engaged is in a rotatable state. .

4 and 5, when the driving motor 34 is driven, the cam gear 36 is rotated via the gear mechanism 35, and the rotation operation member 37a moves. The slider 39 is moved and operated. When the slider 39 is moved, the other limiter plate 55 on which the support pin 58 provided on the slider 39 is coupled to the cam hole 57 is rotated about the support shaft 53a. As the other limiter plate 55 rotates, the one limiter plate 54 provided with the gear portion 54a engaged with the gear portion 55a provided on the limiter plate 55 is moved around the support shaft 53a. It rotates in the reverse direction to the convenience limiter plate 55. The first and second movable guide blocks 27 and 28 are guided to the movable guide grooves 32 and 33 via the first to third connecting arms 51, 52 and 53 and mounted to the cassette mounting portion 22. With the position shown in FIG. 5 which is the loading completion position of the magnetic tape 5 located in the side piece side of the rotating magnetic head apparatus 26 in the position shown in FIG. 4 which faces the space 17 of the tape cassette 1 It is moved between. As a result, the magnetic tape 7 in the tape cassette 1 is taken out of the tape cassette 1 and wound around the tape guide drum of the rotating magnetic head device 26 as shown in FIG.

When the driving of the magnetic tape 7 wound around the tape guide drum of the rotating magnetic head device 26 is stopped, the reel axis selection slider 101 is moved in the direction of arrow X ₁ in FIG. 10. Placed in position. At this time, since the control protrusion 215 provided on one side of the reel shaft selection slider 101 is in contact with the horizontal surface portion 214b of the cam portion 214, as shown in FIG. It is in the state separated from the clutch gear 201. In the second lock lever 221, the control projection 228 provided on the other side of the reel shaft selection slider 101 contacts the horizontal surface portion 227b of the cam portion 227, and the second clutch gear 202 It is placed in the separated state.

Here, the operation mode for fast forwarding or the rewinding operation is selected, and when the capstan motor 34 is driven, the clutch gear 99 rotates according to the rotation direction of the capstan motor 34. ₃ ) Or it is rotated in the direction of the arrow (X ₄ ), it is selectively engaged with any reel shaft drive gear (96, 97), to drive the magnetic tape (7) at high speed in the forward or reverse direction. The magnetic tape 7 is wound around the tape reel 6 on the winding side or the tape reel 5 on the supply side and operated. At this time, since the reel shaft selection mechanism 153 is not operated, the first lock lever 208 or the second lock lever 221 may be formed of the second gear part of the first clutch gear 201 and the second clutch gear 202. The reel shaft gears 94 and 95 are freely rotated, and the magnetic tape 7 can be driven at high speed.

Next, in the stop mode, recording is performed to record and / or reproduce information signals by driving at high speed in the forward direction in which the magnetic tape 7 runs toward the tape reel 6 side on the winding side from the tape reel 5 side on the supply side; When the regeneration operation mode is selected, as shown in FIG. 11, the reel shaft selection slider 101 in which the coupling pin 105 is coupled to the second cam groove 104 of the cam gear 36 is illustrated in the cam gear 36. The engagement pin 105 is moved along the second cam groove 104 along with the rotation in the direction of the arrow R ₁ in the middle to move in the direction of the arrow X _{2 in} FIG. 11.

At this time, in the first lock lever 208, as shown in Fig. 14, the control projection 215 provided on one side of the reel shaft selection slider 101 contacts the inclined surface portion 214a of the cam portion 214, and the locking portion 213 is coupled to the second gear portion 205 of the first clutch gear 201. In the second lock lever 221, the control projection 228 provided on the other side of the reel shaft selection slider 101 contacts the horizontal surface portion 227b of the cam portion 227, and the second clutch gear 202 It is placed in the separated state.

In this state, when the magnetic tape 7 runs in the forward direction in the forward direction, the first clutch gear 201 rotates in response to the rotation of the reel shaft gear 94 while the first gear 204 rotates the second gear 205. () Is prevented from rotating by the first lock lever 208, a slip occurs between the first gear 204 and the second gear 205 to generate a predetermined load. As a result, when the magnetic tape 7 is wound on the tape reel 6 on the winding side, the magnetic tape 7 runs in a state in which a predetermined back tension is applied to the magnetic tape 7 to adjust the winding state without causing the winding to be loosened. Is wound on.

Next, the case where the magnetic tape 7 travels in the reverse direction traveling from the tape reel 6 side on the winding side toward the tape reel 23 side on the supply side will be described. In this case, since the reel shaft selection slider 101 is coupled to the second cam groove 104 of the cam gear 36 by the coupling pin 105, the cam gear 36 is rotated in the direction of the arrow R ₁ in FIG. 12. The coupling pin 105 is moved along the second cam groove 104 and is moved in the direction of an arrow X _{2 in} FIG. 12. At this time, as shown in Fig. 14, the first lock lever 208 has a control protrusion 215 provided on one side of the reel shaft selection slider 101 in contact with the horizontal surface portion 214b of the cam portion 214. It is placed in the state separated from the 1 clutch gear 201. The second lock lever 221 has a control protrusion 228 provided on the other side of the reel shaft selection slider 101 in contact with the inclined surface portion 227a of the cam portion 227. The force is rotated in the direction of the arrow Q in FIG. 14, and the locking portion 223 is coupled to the second gear portion 205 of the second clutch gear 202.

In this state, when the magnetic tape 7 travels in the reverse direction, the second clutch gear 202 is operated by the first gear part 204 to rotate in accordance with the rotation of the reel shaft gear 95, while the second gear part 205 () Is prevented from rotating by the second lock lever 221, and slip occurs between the first gear 204 and the second gear 205 to generate a predetermined load. As a result, when the magnetic tape 7 is wound by the reel shaft 23 on the supply side, the magnetic tape 7 travels in a state in which a predetermined back tension is applied, and adjusts the winding state without causing loosening of the winding to the tape reel 5. It is wound.

When starting the unloading of the magnetic tape 7 drawn out to the tape running path into the tape cassette 1, the reel axis selection slider 101 is shown in the direction of arrow X ₂ in FIG. 12 as shown in FIG. It is in a moved state. Therefore, the locking portion 213 of the first lock lever 208 is not in engagement with the second gear portion 205 of the first clutch gear 201, and the locking portion of the second rock lever 221 ( 223 is in a state where teeth are engaged with the second gear portion 205 of the second clutch gear 202. In this state, as shown in FIG. 4 and FIG. 5, the moving guide block operating mechanism 151 rotates the cam gear 36 via the gear mechanism 35 when the driving motor 34 is driven. The slider 39 is moved by the operation 37a. When the slider 39 is moved, the other limiter plate 55 on which the support pin 58 provided on the slider 39 is engaged with the cam hole 57 is rotated about the support shaft 53a. The limiter plate 54 of one piece provided with the gear portion 54a for engaging the gear portion 55a provided on the limiter plate 55 by rotating the other limiter plate 55 is centered on the support shaft 53a. It rotates in the opposite direction to the other limiter plate 55. The first and second movable guide blocks 27 and 28 are guided to the movable guide grooves 32 and 33 via the first to third connecting arms 51, 52, and 53 so that the rotary magnetic head device 26 Move from the position shown in FIG. 5 which is the loading completion position of the magnetic tape 5 located in the side piece side to the position shown in FIG. 4 facing the space part 17 of the tape cassette 1 mounted in the cassette mounting part 22. FIG. It is manipulated. And the magnetic tape 7 is driven by the capstan motor 25, the reel shaft drive gear 96 is engaged with the clutch gear 99 is rotated via the driving force transmission mechanism 152, the reel shaft 23 is rotated tape It is wound on the reel 5.

By the way, as shown in Fig. 16, the rotating magnetic head device 26 used for the above-described tape recorder is provided below the rotating drum 391 coaxially with the rotating drum 391 with the rotating magnetic head 26a attached thereto. The fixed drum 392 has a tape guide drum 390 and a head drive motor 394 for rotating the rotating drum 391. The rotating drum 391 and the fixed drum 391 are formed in a substantially cylindrical shape having the same diameter.

The rotating magnetic head device 26 is inclined with a predetermined inclination angle with respect to the base 21 on which the traveling path of the magnetic tape 7 is formed on the upper surface side, and the support base 393 attached to the base 31 or the device body. The fixed drum 392 of the tape guide drum 390 is attached to the upper surface side of the tape guide head, and the head drive motor 394 is attached to the lower surface side of the support base 393. When the head drive motor 394 is attached to the support base 393, the head drive motor 394 projects the tip side of the drive shaft 395 through the fixed drum 392 to the upper surface side of the support base 393. The rotating drum 391 is integrally attached to the front end side of the drive shaft 395 protruding to the upper surface side of the support base 393, and the head driving motor 394 is driven to rotate simultaneously with the rotating magnetic head 26a. do.

As such, the rotating magnetic head device 26 inclined with respect to the base 21 and supported by the support base 393 attached to the base 21 or the apparatus main body has a tape guide drum 390 as shown in FIGS. 16 and 17. The drive shaft 395 of the head drive motor 394 which is the central axis of the inclined with respect to the base 21 is installed in the apparatus main body.

The magnetic tape 7 withdrawn from the tape cassette 1 is wound around the outer circumferential surface of the tape guide drum 390 over the range of 160 degrees as described above. Since the tape guide drum 390 is inclined with respect to the magnetic tape 7 traveling on the tape running path, the magnetic tape 7 is spirally wound around the outer circumferential surface of the tape guide drum 390.

The rotating magnetic head 23a is attached to the rotating drum 392 by slightly protruding the tip side where the magnetic gap is formed to the outer circumferential surface of the tape guide drum 390.

The magnetic tape 7 is spirally wound around the tape guide drum 390 by the capstan shaft 61 and the pinch roller 62 so that the rotating drum 392 is rotated in the high speed driving state. And the rotating magnetic head 23a are brought into relative contact with each other so as to form a recording track inclined in the longitudinal direction of the magnetic tape 7, and the recording of the information signal is performed, and the information signal recorded on the recording track is reproduced. .

However, the magnetic tape 7 is drawn out from the upper surface of the base 21 and the tape cassette 1 so as to travel in parallel with the upper surface of the base 21, and is tape inclined with respect to the base 21. It is wound spirally on the outer circumferential surface of the And the first and second moving guide block 27 for guiding the magnetic tape 7 traveling in parallel with the base 21 to be wound spirally around the outer circumferential surface of the tape guide drum 90 installed inclined to the base 21 At least the first and second inclined guide pins 31a and 31b installed at 28 are inclined with respect to the base 21.

Here, specific configurations of the first and second moving guide blocks 27 and 28 will be described.

The first and second moving guide blocks 27 and 28 are supported on the front ends of the first connecting arms 51 and 51 constituting the moving guide block moving operation mechanism 151, and the first and second moving guide grooves ( 32, 33 are provided with a moving base 399 which is moved between the position on the cassette mounting portion 22 side and the position on the side piece side of the rotary head device 26. As shown in FIG.

As shown in FIG. 16, as for the movement base 399, the movement guide shaft 401 which has a cylindrical shape protrudes and is provided in the lower surface side, and this movement guide shaft 401 has the 1st and 2nd movement guide grooves 32 and 33. As shown in FIG. It is installed on the base 21 through the insertion. The movement base 99 allows the movement guide shaft 401 to be guided to the first and second movement guide grooves 32 and 33, on the side of the cassette mounting portion 22 side and the side of the rotation head device 26. It is moved across with the position.

The guide roller 29 is attached to stand upright on the moving base 399. The guide roller 29 has a roller 397 inserted through the base end side of the moving guide shaft 401 into the support shaft 403, which is upright on the moving base 399, as a rotating material. The magnetic tape 7 is wound around the roller 397. The lower flange 398a is integrally formed on the base end side of the support shaft 403, and the upper flange 398b is attached to the upper end side. The magnetic tape 7 wound and rolled around the roller 397 is guided by the lower flange 398a and the upper flange 398b of the upper and lower side edges so that the position where the magnetic tape 7 is wound around the roller 397 is restricted.

The movement base 399 is formed by the first and second members 403a which prevents the support shaft 403 inserted into the movement guide shaft 401 from being attached to the distal end of the proximal end so as to be fixed to the movement guide shaft 401. Preventing it from coming off from the second moving guide grooves 32 and 33 is designed to be supported by the base 2.

Since the support shaft 403 supporting the roller 397 is vertically supported by the moving base 399, the guide roller 29 is installed perpendicular to the base 21.

The first and second inclined guide pins 31a and 31b are attached via a pin attaching portion 399a provided on the moving base 399. The first inclined guide pin 31a installed in the first moving guide block 27 includes a magnetic tape 7 having the first moving guide block 27 located on the side of the rotating shaft head device 26 on a tape running path. When it is moved to the loaded position, as shown in FIG. 16, it is attached on the moving base 99 so that it may incline to the guide roller 29 side which is the inclination direction of the rotating magnetic head apparatus 26. As shown in FIG. The second inclined guide pin 31b installed in the second moving guide block 28 includes a magnetic tape 7 having the second moving guide block 28 located on the side of the rotating shaft head device 26 on a tape running path. When moved to the loaded position, as shown in FIG. 16, it inclines so that it may fall to the rotating magnetic head apparatus 26 side, and is attached on the moving base 399. As shown in FIG. That is, the inclined guide pin 31b provided on the second moving guide block 28 is wound spirally around the inclined tape guide drum 390, and on the exit side from the tape guide drum 399, the tape guide drum Since the traveling direction of the magnetic tape 7 traveling toward the upper side from the lower side of 390 is guided so as to be parallel to the base 21 as shown in FIG. 5, as shown in FIGS. 16 and 17. It is inclined so as to fall toward the rotating magnetic head device 26 and attached on the moving base 399.

In order to reduce the size of the tape recorder, however, it is necessary to make the distance between the pair of first and second moving guide blocks 27 and 28 as small as possible. When the distance between the pair of first and second moving guide blocks 27 and 28 is reduced, the distance to the rotating magnetic head device 26 is also reduced and the first and second moving guide blocks 27 and 28 are rotated magnetically. There is a fear that the inclined guide pin 31b inclined so as to fall toward the rotating magnetic head device 26 when coming toward the head device 26 may contact the tape guide drum 390. When the inclined guide 31b is in contact with the tape guide drum 390, the magnetic tape 7 cannot be wound around the outer circumferential surface of the tape guide drum 390, and thus the rotation including the tape guide drum 390 is performed. The magnetic drum device 26 and the magnetic tape 7 are damaged. In addition, the first and second moving guide blocks 27 and 28 need to be installed in the base 21 by keeping a distance so as not to contact the rotating magnetic head device 26, but the first and second moving guide blocks 27 28 and the space between the rotary magnetic head device 26 can not be miniaturized.

The tape recorder according to the present invention can solve such a problem and make it possible to miniaturize one layer of the tape recorder.

In the tape recorder according to the present invention, the tape moves while the second moving guide block 28 having the inclined guide pin 31b inclined to fall toward the rotating magnetic head device 26 moves toward the rotating magnetic head device 26 side. The magnetic tape 7 is covered with the tape guide drum 390 over a predetermined angle range while regulating the contact of the inclined guide pin 31b to the tape guide drum 390 while having a trajectory to contact the guide drum 390. It is possible to make it cold.

Rotating the second movable guide block 28 having a magnetic head device 26 in such a manner as to fall toward the slope inclined guide pin (31b) is of 18 relative to the base (21) arrow (Y ₁₎ direction or in Fig. 19 arrow ( It is supported so as to incline at a predetermined angle in the Y ₂ ) direction. That is, a clearance is provided between the movement guide shaft 401 supporting the second movement guide block 28 on the base 21 and the second movement guide groove 33 through which the movement guide shaft 401 is inserted. By providing it, it can make it incline with respect to the base 21.

Meanwhile, the second moving guide block 28 is moved to the vicinity of the rotating magnetic head device 26 on the side of the rotating magnetic head device 26, and the inclined guide pin 31b contacts the tape guide drum 390. At this time, the pressing operation part 396 is provided in the direction which releases the 2nd movement guide block 28 from the rotating magnetic head apparatus 26. As shown in FIG. As shown in Figs. 16 and 17, the pressing operation part 396 is formed so that a part of the support base 93 protrudes to the movement trajectory row of the second moving guide block 28. As shown in Figs.

As described above, the second moving guide block 28 is rotated by supporting the second moving guide block 28 so as to be inclined with respect to the base 21, and by installing the pressure operating part 96 on the rotating magnetic head device 26 side. When it moves toward the magnetic head device 26 side and reaches the position where the inclined guide pin 31b contacts the tape guide drum 390, the moving base 399 contacts the press operation part 396. As shown in FIG. When the moving base 399 is in contact with the pressure operating part 396 and the second moving guide block 28 is moved in the direction reaching the side of the rotating magnetic head device 26, the inclined guide pin 31b is taped. It is inclined in the direction away from the guide drum 390, and is moved in a state where contact of the inclined guide pin 31b to the tape guide drum 390 is prevented.

The second moving guide block 28 is also moved after being inclined by the pressing operation part 396, and the pressing operation by the pressing operation part 396 is released to incline or be inclined toward the rotating magnetic head device 26 side. 31b) reaches a position where a sufficient distance is maintained between the tape guide drum 390 and thus no contact with the tape guide drum 390 occurs.

In addition, the first moving guide block 27 can also be easily moved in the first moving guide groove 32 that is curved by supporting the first moving guide block 27 to be inclined with respect to the base 21 in the same manner as the second moving guide block 28. In addition, the first and second moving guide blocks 27 and 28 make it possible to reliably load and unload the magnetic tape 7.

The first and second moving guide blocks 27 and 28 tiltedly supported by the base 21 are moved when the tape loading completion position for winding the magnetic tape 7 around the tape guide drum 390 is reached. The inclination is regulated and positioned by engaging (399, 399) with the positioning members 27a, 28a provided in the base 21. As the moving bases 399 and 399 are positioned, the first and second moving guide blocks 27 and 28 are accurately moved in the direction of the magnetic tape 7 by the guide roller 29 and the inclined guide pins 31a and 31b. Guide the wound around the tape guide drum (90).

In the above-described embodiment, since the second moving guide block 28 is inclined in the disengaging direction from the rotating magnetic head device 26, the pressure operating portion 396 is provided on the support base 93. As described above, the inclined surfaces 408 and 409 may be formed on the opposite side of the second moving guide groove 33. These inclined surfaces 408 and 409 are formed before and after the position where the second moving guide block 28 moves toward the rotating magnetic head device 26, and the inclined guide pin 31b contacts the tape guide drum 390. do.

Incidentally, the inclined surfaces 408 and 409 may be provided only on one side surface of the second moving guide groove 33.

Next, in the tape recorder provided with the above-described rotating magnetic head device 26, the traveling control of the recording / reproducing section and the magnetic tape 7 which controls the traveling of the magnetic tape 7 to perform recording and / or reproduction of the information signal. Explain the mechanism.

As shown in FIG. 21, the tape recorder according to the present invention converts an analog audio signal into a digital signal to generate a recording signal, and a helical scan of the recording signal from the recording signal processing unit 410. The recording / reproducing unit 420 for recording the data recorded on the magnetic tape 7 and outputting the reproduction signal by the method, and the reproduction signal from the recording / reproducing unit 420 as analogues. And a system controller 440 for controlling the recording signal processing unit 410, the recording / reproducing unit 420, and the reproduction signal processing unit 430.

As shown in Fig. 21, the recording signal processing unit 410 includes an amplifier 411 for amplifying analog voice signals, and a low pass filter (hereinafter referred to as LPF) 412 for removing high frequency components of the amplified voice signals. And an analog / digital (hereinafter referred to as A / D) converter 413 for converting a voice signal into voice data, an error detection code adding circuit 414 for adding an error detection code, and recording the voice data on magnetic tape. A modulator 415 modulates the modulation scheme applied to the modulation scheme.

The amplifier 411 amplifies the analog audio signal to be input and at the same time pre-emphasizes the audio signal to the LPF 412. The LPF 412 removes a component of 1/2 or more of a sampling frequency (for example, 48 kHz) which is a so-called prefilter and supplies it to the A / D converter 413. The A / D converter 413 converts analog audio signals into 16-bit audio data, for example.

The error detection code adder circuit 414 interleaves the voice data, for example, and simultaneously provides a redundant Reed-Solomon coding to the modulator 415. The modulator 415 detects an error using, for example, an 8-10 modulation method. After modulating the voice data to which the correction code is added, for example, a sub code or a pilot signal in the so-called ATF (Automatic Track Following) method is added, and the resulting recording signal is supplied to the recording / reproducing section 420.

In the tape recorder, a recording operation mode is selected for recording a recording signal, and the magnetic tape 7 drawn out from the tape cassette 1 is placed on the outer peripheral surface of the tape guide drum 26 of the rotating magnetic head device 26. Tape loading is carried out so that it can be rolled up over a range of approximately 160 degrees to form a shape. When tape loading is performed, the pinch roller 62 is pressed against the capstan shaft 61, and the lip tape 7 is clamped to move forward toward the tape reel 6 on the winding side from the tape reel 5 on the supply side. Drive in the constant direction. At this time, the head drive motor 394 of the rotating magnetic head device 26 starts driving, and the rotating drum 391 to which the rotating magnetic head 26a is attached is rotated.

The rotating magnetic head 26a is rotated at 2000 rpm, for example. The capstan shaft 61 is rotated by the capstan motor 25 at a rotational speed corresponding to a predetermined speed such as a tape running speed of 8.15 m / s. At this time, the reel shaft 23 on the supply side is placed in a rotatable state, and the reel shaft 24 on the winding side is rotated by the driving force of the capstan motor 25. The magnetic tape 7 is withdrawn from the tape reel 5 on the supply side of the tape cassette 1, wound around the tape guide drum 390 of the rotary magnetic head device 26, and travels at a constant speed to provide a tape cassette ( It is wound by the tape reel 6 of the winding side of 1).

However, in the tape recorder according to the present invention, as shown in Fig. 22, the rotation speed adjusting mechanism 429 which controls the rotation speed of the reel shafts 23 and 24 on the winding side and the supply side by controlling the rotation speed of the capstan motor 25 This rotational speed adjustment mechanism 429 controls the capstan motor 25 to apply the rotation of the magnetic tape 7 wound around the tape reel 6 on the winding side when braking the reel shaft 23 on the supply side. To control.

In such a state, the rotating magnetic head device 26 makes the rotating magnetic head 26a and the magnetic tape 7 contact each other so as to slide relative, and the recording signal supplied from the modulator 415 is magnetic tape (by helical scan method). Record in 7). On the magnetic tape 7, an inclined recording track in which a recording signal is recorded in a predetermined format is formed.

Next, in reproducing the recording signal recorded on the magnetic tape 7, the reproducing operation mode is selected, and the magnetic tape 7 drawn out from the tape cassette 1 in the same manner as the above recording operation mode is rotated. A tape loading is performed to wind the tape around the outer circumferential surface of the tape guide drum 26 over a range of approximately 160 degrees to form an M shape. When tape loading is performed, the pinch roller 62 is pressed against the capstan shaft 61, and the magnetic tape 7 is held in the forward direction running toward the tape reel 6 on the winding side from the tape reel 5 on the supply side. Drive at constant speed. At this time, the head drive motor 394 of the rotating magnetic head device 26 starts driving, and the rotating drum 391 to which the rotating magnetic head 26a is attached is rotated.

Although not shown, the tape recorder according to the present invention is provided with a tracking mechanism, and the tracking speed of the capstan motor 25 is controlled based on the pilot signal of the ATF recorded on the magnetic tape 56. do.

The reel shaft 25 on the winding side has a winding diameter of the magnetic tape 7 wound around the tape reel 6 on the winding side by the rotation speed adjusting mechanism 429 when the reel shaft 23 on the supply side is controlled. It is controlled at a suitable rotational speed. The magnetic tape 7 is withdrawn from the tape reel 5 on the supply side of the tape cassette 1, wound around the tape guide drum 390 of the rotating magnetic head device 26, and the rotating magnetic head 26a is It travels at the speed which always scans an inclination recording track, and winds around the tape reel 6 of the tape cassette 1 on the winding side.

When the rotating magnetic head 26a operates the inclined recording track of the magnetic tape 7, the recording signal recorded on the magnetic tape 7 is reproduced, and the reproduction signal is supplied to the reproduction signal processing unit 430. As shown in FIG. 21, the tape recorder according to the present invention includes a demodulator 431 for demodulating a reproduction signal from the reproduction signal processing unit 430, and an error correction circuit for error correction of audio data from the demodulator 431 ( 432, a D / A converter 433 and LPF 434 for converting error-corrected voice data into an analog voice signal, and a line amplifier 35 for amplifying the voice signal from the LPF 434.

The demodulator 431 corresponds to the modulator 415 of the recording signal processing unit 410. The demodulator 431 binarizes the reproduction signal supplied from the recording and playback unit 420, and performs inverse 8-10 modulation to reproduce the reproduced audio signal. The error correction circuit 432 is supplied. The error correction circuit 432 performs error correction of the voice data using the Reed Solomon code, and deinterleaves it, and supplies the error corrected voice data to the D / A converter 433. The D / A converter 433 and the LPF 434 convert the voice data into an analog voice signal, and the amplifier 435 amplifies the voice signal and de-emphasizes it, for example, and supplies it to an amplifier of a stereo device. The recording signal recorded on the magnetic tape 7 is reproduced.

Here, a mechanism for controlling the rotation of the capstan motor 25 and controlling the rotational speed of the magnetic tape 7, the rotational speed of the reel shaft 23 on the supply side and the reel shaft 24 on the winding side will be described.

In the tape recorder according to the present invention, as shown in Fig. 22, sensors 441, 442 and 443 for detecting respective rotational speeds of the reel shaft 23 on the supply side, the capstan motor 25 and the reel shaft 24 on the winding side are shown. Equipped. These sensors 441, 442 and 443 are made of, for example, Hall elements, and are attached to the reel shaft 23 on the supply side, the capstan shaft 61 which is the drive shaft of the capstan motor 25, and the reel shaft 24 on the winding side, respectively. The FG signal as a detection signal having a frequency proportional to the rotational speed of each axis is supplied to the system controller 440 in accordance with the rotation of the magnetic material.

The system controller 440 outputs a rotation speed control signal for controlling the rotation speed of the capstan motor 25 based on the period of the FG signal output from each sensor 441, 442, 443, and the rotation speed adjustment mechanism 429. Supplies). The rotation speed adjusting mechanism 429 controls the rotation speed of the capstan motor according to the rotation speed control signal output from the system controller 440. In the system controller 440, any one of the lengths of the entire length of the magnetic tape 7 while the magnetic tape 7 is traveling on the basis of the FG signals detected by the sensors 441, 442, and 443 is rotated. It is always detected whether it is scanned by 26a). The system controller 440 winds the magnetic tape 7 wound around the supply tape reel 5 and the winding side tape reel 6 based on the FG signals output from the sensors 441, 442, and 443. The diameter is calculated.

Here, in the recording operation mode or the reproduction operation mode in which the magnetic tape 7 runs at constant speed in the forward direction, as shown in Fig. 23, a PWM signal having a predetermined crest value is transmitted to the capstan motor 25 via the rotation speed adjusting mechanism 429. Supplied. The duty is controlled based on the rotational speed control signal generated and detected based on the period of the FG signal supplied to the capstan motor 25. The rotation speed adjustment mechanism 429 supplies the capstan motor 25 with the PWM signal controlled based on the rotation speed control signal, and controls the magnetic tape 7 to travel at a constant speed.

When a fast sending operation mode or a high speed search operation mode is selected, the system controller 440 rotates the reel shaft 23 on the supply side in a state in which the magnetic tape 7 is wound around the rotary magnetic head device 26. The head drive motor 394 which freely and rotationally drives the rotating drum 391 is controlled to rotate at a predetermined rotational speed, and the pinch roller 62 is separated from the capstan shaft 61 to carry the magnetic tape 7. Control to run freely. As shown in Fig. 23, the system controller 440 has a crest value PWM signal having a crest value larger than the crest value in the recording or reproducing operation mode so that the capstan motor 25 rotates at a high speed in the electrostatic direction. The rotation speed adjusting mechanism 429 is controlled to be supplied to.

When the capstan motor 25 is rotated in the electrostatic direction, the driving force transmission mechanism 152 is controlled, is transmitted to the reel shaft 24 on the side where the driving force of the capstan motor 25 is wound, and the magnetic tape 7 is supplied at high speed to the supply side. The tape reel 5 runs toward the winding tape reel.

When the high-speed search operation mode is selected, recording tracks are scanned by the rotating magnetic head 26a sliding and contacting with the magnetic tape 7 traveling at high speed, so that one piece of music recorded on the magnetic tape 7 is recorded. A search for an address or the like indicating the head of the unit information signal corresponding to the search is performed.

When the driving of the magnetic tape 7 traveling at high speed in the fast scanning mode or the high speed search operation mode is stopped, or when the head address of the music to be searched or the end of the magnetic tape 7 is detected, the system controller 440 is detected. As shown in FIG. 23, the rotation speed adjustment mechanism 429 is controlled so that the crest value PWM signal which the capstan motor 25 makes possible at the lowest rotation speed is supplied to the capstan motor 25. As shown in FIG. The system controller 440 then capstans a control PWM signal having a duty based on the winding diameter of the magnetic tape 7 wound around the supply tape reel 5 detected by each sensor 441, 442, 443. The motor 25 is supplied to brake the capstan motor 25. Specifically, as shown in FIG. 23, the system controller 440 has a period of 60 ms and a duty of 17% (that is, 10 ms) in accordance with the winding diameter of the magnetic tape 7 wound around the supply tape reel 5. The PWM signal is supplied to the capstan motor 25 via the rotation speed adjusting mechanism 429. This starts the operation of the capstan motor 25. At this time, the system controller 440 monitors the rotational speed of the capstan motor 25 based on the FG signal supplied from the sensor 427. For example, when the period of the FG signal becomes more than a predetermined threshold, that is, the capstan motor ( The magnetic tape 7 is stopped by supplying the control PWM signal to the capstan motor 25 or by supplying a PWM signal corresponding to the lowest driving voltage of the capstan motor 25 when the rotation speed of the motor 25 becomes less than or equal to a predetermined value. It prevents the wind of loosening and enables the winding.

The cycle and duty values of the control PWM signal described above are only one specific example, and these values of the tape reel 5 on the supply side that were rotating with inertia force when the rotation of the tape reel 6 on the winding side stopped. The rotation also stops. In this way, the sending of the magnetic tape 7 generated at the time of tape stop, which is a problem in the conventional tape recorder of the rotating magnetic head system, can be stopped quickly without loosening.

When the front end of the magnetic tape 7 is detected, the control PWM signal with a duty of 100% is supplied until the capstan motor 25 stops. That is, when the end of the magnetic tape 7 is detected by a tape end detecting means (not shown), the magnetic tape 7 is not present in the tape reel 5 on the supply side. There is nothing to do.

The tape-and-detection means detects the tape-end by optically detecting the leader tape portions provided at the beginning and the end of the magnetic tape 7, and supplies the detection result to the system controller 440.

The rewinding operation mode of the magnetic tape 7 is also performed in principle in the same manner as the above-mentioned quick sending operation mode.

When the rewinding operation mode is selected, the system controller 44 retracts the magnetic tape 7 in the state of being wound around the rotating magnetic head device 26, for example, when searching by the signal according to their operation from the operation unit. In this case, the reel shaft 24 on the winding side is used as the rotating material, and the head drive motor 394 for rotating the rotating drum 391 is controlled to rotate at a predetermined rotational speed. In addition, the system controller 440 separates the pinch roller 62 from the capstan shaft 61 so that the magnetic tape 7 can run freely, and the driving of the capstan motor 25 is performed by the rotation speed adjusting mechanism 429. It is controlled to be directly transmitted to the reel shaft 23 of the supply side via. In this way, the magnetic tape 7 travels at a higher speed than in normal regeneration, and the rotating magnetic head device 26 is wound around the supply side of the tape reel 5 at a diameter.

When the stop operation is performed while the magnetic tape 7 is being rewound, the duty based on the winding diameter of the magnetic tape 7 wound around the tape reel 6 on the winding side calculated as described above. The control PWM signal having a is supplied to the capstan motor 25 from the system controller 440. At this time, the rotation speed adjusting mechanism 229 is switched by the system controller 440 so that the control PWM signal supplied to the capstan motor 25 becomes a polarity rotating in the opposite direction to the rotation at the time of the rewinding operation.

At this time, the system controller 440 monitors the rotation speed of the capstan motor 25 based on the FG signal from the sensor 427, and the capstan motor 25 when the rotation speed of the capstan motor 25 becomes less than or equal to a predetermined value. To stop the supply of the control PWM signal. In this way, it is possible to stop the rewinding operation mode without causing the winding of the magnetic tape to the tape reel occurring at the time of tape running stop which is a problem in the conventional tape recorder of the rotary magnetic head type.

In the above-described embodiment, the capstan motor is used as an example without using a dedicated drive motor for driving the reel shafts on the supply side and the winding side. You may apply. In this case, the driving motor for driving the reel shaft is controlled.

In addition, the above-described embodiment has been described using an example applied to a tape recorder having a rotating magnetic head device. However, the present invention provides a magnetic tape having a rotating magnetic head device such as a video tape precoder for recording and / or reproducing a video signal. The same advantages as described above are widely applied to the recording and / or reproducing apparatus used in the present invention.

As described above, the magnetic tape recording and / or reproducing apparatus according to the present invention has a switching mechanism provided with an intermediate gear located between a supply side reel gear and a winding side reel gear during the loading operation of the magnetic tape by the tape loading mechanism. After the intermediate gear of the switching mechanism has finished loading the magnetic tape, the driving direction of the magnetic tape is controlled by selectively fitting the supply side reel gear and the winding side reel gear so that the magnetic tape is changed only by switching the intermediate gear. It is possible to control the running direction of the magnetic tape and to switch the traveling direction of the magnetic tape quickly.

In the magnetic tape recording and / or reproducing apparatus according to the present invention, there is a space between a position where the magnetic tape is taken out from a tape cassette mounted on the cassette mounting portion and a position where the magnetic tape is wound on the tape guide drum of the rotating magnetic head apparatus. Since one of the pair of moving guide portions of the tape take-out mechanism for moving the tape is inclined in the direction away from the rotating magnetic head apparatus, the moving guide portion can be moved closer to the rotating magnetic head apparatus that is inclined. The distance between the moving guides can be reduced, the size of the entire apparatus can be reduced, and the magnetic tape and the rotating magnetic head device can be protected.

In addition, the recording and / or reproducing apparatus of the magnetic tape according to the present invention causes the capstan motor which runs the magnetic tape to rotate in reverse direction to supply a control signal when the magnetic tape is decelerated or stopped while the magnetic tape is traveling at a constant speed. As a result, the magnetic tape can be prevented from running under an inertial force, and the magnetic tape can be wound without causing looseness.

Claims (19)

Supply side reel for sending magnetic tape, A supply side reel gear for rotating the supply side reel; Winding side reel to wind magnetic tape, A winding side reel gear for rotating the winding side reel; A tape guide drum which is wound around the magnetic tape drawn from the tape cassette, A tape loading mechanism for extracting the magnetic tape from the tape cassette to perform a tape loading operation wound around the tape guide drum, and performing an unloading operation of separating the magnetic tape from the tape guide drum and storing the tape in the tape cassette; A switching mechanism for switching the traveling direction of the magnetic tape drawn out of the tape cassette by the tape loading mechanism; The switching mechanism selectively positions the supply side reel gear and the winding side reel gear to selectively drive any of the supply side reel gear and the winding side reel gear, and between the supply side reel gear and the winding side reel gear. In addition, while moving between the supply side reel gear and the reel position on either side of the winding side reel gear, and during the loading operation of the magnetic tape by the tape loading mechanism the supply side reel gear and the winding side reel An apparatus for recording and / or reproducing a magnetic tape comprising an intermediate gear positioned between a gear. The method of claim 1, And the intermediate gear is in alignment with one of the supply side reel gear and the winding side reel gear during an unloading operation by the tape loading mechanism. The method of claim 2, And the intermediate gear has a clutch mechanism. The method of claim 2, The intermediate gear is located between the supply side reel gear and the winding side reel gear and at a position separated from either of the supply side reel gear and the winding side reel gear after the unloading operation by the tape loading mechanism is completed. A magnetic tape recording and / or reproducing apparatus, characterized by being moved. The method of claim 2, The unloading mechanism is inserted into a tape cassette, and a pair of movement guide portions which move between a position at which the magnetic tape is withdrawn from the tape cassette and a position at which the magnetic tape withdrawn from the tape cassette is wound around the tape guide drum. And a pair of moving operation mechanisms for moving a pair of moving guide portions, said apparatus further having a drive mechanism for driving said moving operation mechanism of said tape loading mechanism. The method of claim 5, And the drive mechanism includes a cam gear having a cam portion for driving the movement manipulation mechanism and a slider which is moved by the cam gear to drive the movement manipulation mechanism. The method of claim 5, The apparatus is also provided with an operating mechanism for tilting one of the pair of moving guide portions in a direction away from the tape guide drum when the pair of moving guides are moved to a position proximate to the tape guide drum. Magnetic tape recording and / or reproducing apparatus. The method of claim 7, wherein The apparatus further includes support means for supporting the tape guide drum with a rotating material, and the operation mechanism is provided in the support means. The method of claim 8, And the operation mechanism is a protrusion provided on the support means to contact the movement guide portion of the piece to incline the movement guide portion. The method of claim 5, The apparatus further comprises a switching mechanism which is operated by the drive mechanism to selectively engage the intermediate gear with either the supply side reel gear and the winding side reel gear. . The method of claim 10, And the drive mechanism includes a cam gear having a cam portion for driving the changeover mechanism and a slider which is moved by the cam gear to drive the changeover mechanism. A tape wife drum in which the magnetic tape drawn out from the tape cassette is wound; A tape take-out mechanism having a pair of moving guide portions inserted between the tape cassette and moving between the position where the magnetic tape is withdrawn from the tape cassette and the position where the magnetic tape withdrawn from the tape cassette is wound on the tape guide drum; And a manipulation mechanism for tilting one of the pair of moving guide portions in a direction away from the tape guide drum when the pair of moving guide portions are moved to a position close to the tape guide drum. Tape recording and / or reproducing apparatus. The method of claim 12, The apparatus further includes support means for supporting the tape guide drum with a rotating material, and the operation mechanism is provided in the support means. The method of claim 13, And said operating mechanism is a projection provided on said support means to contact said one of said moving guide parts to incline said moving guide parts. Supply side reel for sending magnetic tape, Winding side reel to wind magnetic tape, Rotation detection means for detecting rotation of the supply side reel and the reel side; A traveling mechanism for driving the magnetic tape at a constant speed with the capstan and the capstan motor for rotating the capstan; Control means for controlling the capstan motor on the basis of the detection result from the detection means, The control means is a period in which the period of the detection signal from the detection means reaches a predetermined period so that the capstan motor rotates in the capstan motor when the traveling speed of the magnetic tape is decelerated by the traveling mechanism. Apparatus for recording and / or reproducing magnetic tape formed by supplying a tape. The method of claim 15, And the control means stops the supply of the control signal to the capstan motor when the period of the detection signal from the detection means becomes longer than a predetermined period. The method of claim 16, And the control means generates a duty of the control signal based on a result of detecting the supply side reel by the detection means and supplies the duty to the capstan motor. The method of claim 17, The control means calculates the amount of magnetic tape wound around the supply side reel based on the detection result by the detection means, and generates the control signal based on the calculated result. And / or playback apparatus. Supply side reel for sending magnetic tape, Winding side reel to wind magnetic tape, Rotation detecting means for detecting rotation of the supply side reel and the reel side; A traveling mechanism for driving the magnetic tape at a constant speed with a capstan and a capstan motor for rotating the capstan; Control means for controlling the capstan motor on the basis of the detection result from the detection means, The control means for recording and / or reproducing a magnetic tape which supplies a control signal to the capstan motor until the detection of the stop of the rotation of the supply side reel and / or the winding side reel is detected by the detection means when the tape end is detected. .